JPH0858438A - Rigid electric-car line anchoring device - Google Patents

Abstract

PURPOSE: To lessen the flexure between fulcrums and elongate the pitch between the fulcrums and simplify the laying work by providing a rocking plate in which the other end of a traction spring device whose one end is anchored to a ceiling is bound up by a wire in both end parts of on electric car line and whose upper end is axially supported to the ceiling and lower end is formed in a circular arc capable of engaging with the wire. CONSTITUTION: A slide hanger H is fixed to a ceiling, and it supports a rigid electric-car line G at its receiving edge. A trolley line (g) is held at the bottom of the electric-car line G. Moreover, a traction spring device S is provided with a main cylinder 9 with a built-in spring 11. One end of the main cylinder 9 is anchored to the mounting metal fitting 12 with a clevis 9a. The projecting end of a sub cylinder 10 is connected through a turn buckle 13 to the connection sleeve 7a of a wire 7. Moreover, for a rocking plate 8, a clevis 8a is pivoted to a mounting metal fitting 14 on the ceiling, and a guide groove 8b for engaging with a wire 7 is bored on the circular part on the lower side, and it is positioned so that the extension of the rigid electric-car line G may be approximately tangent to this circular arc, thus, this hauls the electric-car line. G at all times.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retaining device at both ends of a rigid train line supported by a slide hanger.

[0002]

2. Description of the Related Art A rigid electric power line supported by a plurality of slide hangers has a system in which a central portion thereof is locked to a ceiling, and both sides thereof are freely expanded and contracted in response to temperature changes. However, due to the large friction with the slide hanger, it was found that bending occurs between the hangers, which causes wavy wear on the lower trolley wire. Therefore, stop the central locking,
A method has been created in which both ends are towed by springs. (Actual publication 60-39286). In this method, since the spring device requires a large traction force, the volume is large and the following inconvenience occurs in terms of implementation. Rigid train lines are 200-500 in length
Although the length is m, some of the adjacent train lines are arranged in parallel at a slight interval at their ends to form so-called expansion joints for connection. Since the upper spring device, which has a small gap in the parallel portion, has a large volume, it conflicts with an adjacent electric line, so that the spring device cannot be provided on the extension line of the end portion. It is necessary to have a structure that avoids this conflict and can exert effective traction.

[0003]

SOLUTION: One end of a spring device is locked to a ceiling, the other end is connected to a terminal of a rigid electric power line with a wire, and another fan-shaped swing plate is pivotally supported on the ceiling, and its arc surface is used as a wire. Engage. The swing plate swings in response to the extension and contraction of the trolley wire, and exerts a traction force in the axial direction of the trolley wire. The end of the tramway is slightly curved upwards. Since the wire tilts from the end of the trolley wire to the spring device diagonally above, the spring device does not interfere with the trolley wire below.

[0004]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings will be described. The slide hanger H (FIG. 3) is fixed to the ceiling, and has an inward receiving edge 2 via an insulator 1 at the lower part. The rigid train line G has a π-shaped cross section and is slidably supported by the receiving edge 2. A flexible thin portion is formed at the center of the upper side of the train line G, and the trolley wire g is gripped by tightening the bolt 3 by the teeth at the lower ends of both legs. Towing spring device S
Is a main cylinder 9 having a built-in spring 11, and a spring receiving plate 10a at one end of which is inserted into and retractable from the main cylinder 9 to lock the spring 11 in the compression direction, and the other end of which is projected to the outside of the main cylinder. It is formed from the sub-cylindrical body 10.

A clevis 4 is provided at one end of the main cylindrical body 9 and is retained by a mounting bracket 12 on the ceiling. A pulling tab 5 is provided at the protruding end of the sub-cylindrical body 10, and is connected to the end of the wire 7 to a connecting sleeve 7a crimped via a turnbuckle 13. In the tension rod 6, two long plates are integrated in parallel by an intermediate spacer 6a, and the central portion has almost the same shape as the warped shape of the end of the electric power line, and is inserted between both legs of the π type electric power line. Hold one end of it to the bolt that passes through the train line. The other end projects outward from the π-type electric power line and is connected to the wire 7 via an eye fitting 7b. Further, the wire retaining end of the tension rod 6 is curved downward so as to be on the rigid body axis of the train line.

The rocking plate 8 is fan-shaped and has a base clevis 8a.
Is attached to a mounting bracket 14 on the ceiling, and a guide groove 8b that engages with the wire 7 is formed in the lower arc portion. This arc is positioned so that the extension line of the rigid electric train line G is substantially a cut line with respect to this arc. That is, when the train line G towed by the spring device S via the wire expands and contracts, the swing plate 8 swings correspondingly and always pulls the train line G in the axial direction.

As shown in FIGS. 1 and 2, the electric train line G is arranged close to and close to an end of the electric train line, but the spring device S is located above the electric train line G, regardless of a small mounting space. There is no conflict. Although the above has described the π-type trolley wire, the same is true when used for a monopod T-type trolley wire. In addition, the rigid train line is easily slid at the friction support points during expansion and contraction, so that the deflection between the support points is reduced.
Therefore, it is possible to lengthen the support point pitch, which greatly simplifies the laying work of the electric line and reduces the construction cost.

[0008]

[Effect] At both ends of the rigid train line, the spring device S enables an effective traction action in the axial direction of the train line without touching adjacent trains at narrow mounting locations. That is, the rigid train line simplifies sliding at the friction support points during expansion and contraction, thus reducing deflection between the support points and increasing the support point pitch, simplifying the laying work of the train line, Enables a significant reduction in construction costs.

[Brief description of drawings]

FIG. 1 is a front view of the device.

FIG. 2 is a bottom view of the same.

FIG. 3 is a side view of a slide hanger.

[Explanation of symbols]

 H Slide hanger G Rigid train line g Trolley wire 1 Insulator 2 Receiving edge 3 Bolt 4 Clevis 5 Puller 6 Tension rod 7 Wire 8 Swing plate 9 Main cylinder 10 Sub cylinder 11 Spring 12 Mounting bracket 13 Turnbuckle 14 Mounting bracket

Claims (1)

[Claims] 1. A rigid train line supported by a plurality of slide hangers fixed to a ceiling, a traction spring device having one end of the extension line at both ends of the train line retained on the ceiling, and a train line end. A rigid body composed of a wire connecting the end portion to the other end of the spring device, an upper end pivotally supported on the ceiling, and a lower end formed into an arc that is engageable with the wire in a cut line state with respect to an extension line of a train line. Train line stop device.